Apparatus for cooling molds



2 Sheets-Sheet 1 June 25, 1946.

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' INVENTOR. Ewan/c1: WILL/AM STEWART MATTHEW JAMES KELLY BY Asusr J.Risk f ATTOfiEY.

June 25, 1946. F. w.' STEWART ET AL APPARATUS FOR COOLING MOLDS FiledJuly 12, 1945 2 Sheets-Sheet 2 F 3 INVENTOR.

Fezasmcx WILL/AM Srswazr Mam/5w .Zwzs KELLY BY Asian J: PEEK 2 ATTO IVEY.

Patented June 25, 1946 APPARATUS FOR COOLING MOLDS Frederick WilliamStewart, Weston, W. Va., Ashley J. Reek, Garrick, Pa., and Matthew JamesKelly, Elkins, W. Va., assignors to Kelly Foundry and Machine Company,Elkins, W. Va.

Original application May 1, 1940, Serial N 0. 332,662., now Patent No.2,329,012, September 7,

1943, Serial No. 494,270

2 Claims. 1

This is a division of our co-pending application SeriaI'No. 332,662,filed May 1, 1940, pursuant to which Letters Patent No. 2,329,012 wereissued on September 7, 1943.

This invention relates to apparatus for. the manufacture of glassware-It has to do particularly with a paste mold machine wherein the moldsare mounted on a rotatable table, the blow pipes being placed on andremoved from the machine by hand.

One object of this invention is the provision of an improved moldcooling system, said system being substantially closed and selfcontained, the equipment necessary to the operation thereof being builtinto and transportable with the machine.

Another object is to provide in a mold cooling system means enabling anincrease in the amount of heat dissipated thereby increasing thecapacity of the system for cooling purposes. Another object is toprovide for the settling out of sediment and other foreign matter whichmight otherwise clog the supply lines and spray heads or mark the wareif sprayed thereon.

Other objects and advantageous features will be noted in the followingdetailed description and accompanying drawings wherein like charactersof reference designate corresponding Parts and wherein:

Figure l is an elevation of the base of the preferred form of paste moldglass machine with which the novel apparatus for cooling blow molds isassociated, the upper portion of the machine being omitted.

Figure 2 is a top plan view of the whole of the machine of which onlythe base and the mold table with the molds thereon is shown in Figure 1.

Figure 3 is a vertical section through the lower portion of the machinetaken alon the line 3-3 in Fig. 2, parts including the compressed airtank and the reduction gear housing being omitted for the sake ofclearness.

Figure 4 is a view of the right hand side of the machine base.

Figure 5 is a plan view of the drip pan on a reduced scale.

The numeral designates the base of the machine shown as a wheeled truck,with axles 2 mounted on center pivots 3 so that the machine may beturned on a short radius and moved from one location to another. Alocking pin 2a is provided for each axle which is Withdrawn before theaxle may be swivelled. The base is formed with a compartmented centersection and right and left aproned platforms 6 and 1 respectively,Figures 1, 2 and 3, the drive motor 8 and Divided and this applicationJuly 12,

associated 'drive mechanism being mounted on platform 6 and the aircompressor 9, the compressed air tank 9a, motor In and other apparatusassociated therewith mounted on platform I the details of which arefully described in our application Serial No. 332,662, filed May 1,1940, now Patent 2,329,012.

Said base is provided with an axial vertically disposed hub in which isfixed a hollow vertical standard l2, Figure 3, with a sphericalanti-friction bearing I4 thereon resting on top of hub II. An annularshoulder IS on standard l2 bears against the bearing and the entireassembly is tightened down by nut I3 on the threaded lower end ofstandard |2. The bearing l4 rotatably supports a hollow column l6 havingan annular enlargement l which fits over the outside of the bearing,said standard extending above the col umn as shown in Figures 1 and 2.The spherical bearing will permit 4 deflection of the column from thevertical.

Near the bottom of the column l6 and around the perimeter thereof is anannular gear 22, Figure 3, which meshes with a drive pinion 23 on drivenshaft 24 journaled in housing 25 whereby the column is rotated. 26,Figure 2, designates a housing enclosing compound reduction gearing towhich shaft 24 is connected by coupling 24a and in housing 21 is a wormgear having a worm shaft 28, Figures 2 and 4, on which a pulley 29 ismounted driven by belt 30. 3| is the three part double groove pulley,Figures 2 and 4, of a speed reducer, the pulley being mounted on a shaft32 supported by a pivoted lever 33, the angular position of which isadjusted by screw 34. Belt 30 seats in the right hand groove of pulley3|, Figure 2, and belt 35 connected to pulley 36 on motor shaft 31 isseated in the left hand groove. By changing the angular position oflever 33, one belt is tightened and the other loosened, the depth of thegrooves being varied automatically due to a center section 3|a of pulley3| being shiftable on shaft 32.

As indicated by arrows in Figure 2, the direction of rotation of columnI6 is clockwise.

A fluid tight cover 51, Figure 3, closes an oil compartment 38surrounding the spherical bearing l4, gear 22 and pinion 23. Saidcompartment is filled with oil through externally located pipe 39,Figure l. The pipe has a drain plug at the lower end. Surrounding thewall 40 of this compartment and spaced therefrom is an annularupstanding flange 4| having radially extending vertical webs 42 spacedat 45 which are joined to the wall 40 thereby forming a series of opentop compartments 43. Each web, except web 44, has a centrally locatedopening 45 therethrough near the floor of the compartment therebyconnecting adjacent compartments and enabling cooling fluid to pass fromone to the other as will later be de-- scribed in detail.

46 is the circular mold table, Figure 3, provided with an axial hub 41which fits over column l6, said table being rotatable therewith. Thecolumn is threaded externally at 48 and both the. table and column havecontiguous. key slots in which key 4 is located. The table is verticallyad justable on the column by means of screw collars 4.9 and 58 which arescrewed on the column l6 beneath and above the table respectively.Radial sockets are provided in each collar for the insertion of a toolfor rotating and tightening the collars.

The table is provided with one or more holes 52 for draining sprayedwater into an annular drip pan 53 therebelow, the surface of the tablesloping slightly toward the center where the holes are positioned.

The table of the machine has three molds located on 12d centers as willbe noted in Figure 2. These molds are made in separable sections 54 and55 respectively and the molding cavity which is formed when the sectionsare closed may be of any desired contour to suit productionrequirements. Also the number of molds utilized is not limited to threein number and may be increased within practical limits. A detaileddescription of the actuating mechanism for opening and closing saidmolds Will be found in the parent application hereof. g

It is desired to cool the molds by spraying cooling fluid thereinto andto recover the fluid and recirculate it. 2213, Figures 2 and 4, is apump driven off the reduction gearing in housing 26 by a worm in housing22l. The inlet side of the pump is connected with a fluid reservoir inthe base of the machine by a line 222 and the outlet side of the pump isconnected to a pipe 223 having a spray nozzle 223., Figure 1, located atthe perimeter of the mold table and directed toward said molds, E i-55,there being a valve 224 in said line for control purposes.

Sprayed fluid drains through the apertures in table 46 onto the surfaceof a collecting pan 53 superimposed on the base and supported on tops ofwebs 42. This pan, Figure 3, is constructed with a frusto-conical centersection 53 and has a radial upstanding rib 22-5 which act as a barrierto the flow of fluid connecting in the trough formed by the juncture ofthe frustoconical section and the wide flaring brim, flange 22], Fig. 5.It is desired that the trough have about a 1 drop so that fluid willflow by gravity in the direction of the arrow into a drain hole 228 atthe lowest point of the trough adjacent the rib and will drain therefrominto the compartment A above the radial rib 44, Figure 2, due to theposition of the pan on the base. The fluid will pass slowly fromcompartment to compartment in the base through the communicatingpassages 45 and will be drawn off from compartment B by the pump,sediment settling out of the same during the progress. In this mannerthe fluid is caused to follow a circuitous path reversing itself once inthe process and coming in contact with a large area of heat radiatingsurface so that by the time it is drawn into the pump againv it will beappreciably cooled.

Weclaim:

1. In a glass forming machine, the combination of a base, a columnrotatably supported by th base, a mold table mounted on the column abovethe base, an annular series of molds mounted on the table, the uppersurface of the table being dished toward the column and provided withholes through which liquid may drain, an annular pan mounted below thetable and coaxial therewith to receive the liquid that drains from theholes in the mold table, a pump having inlet and outlet connectionsmounted on the base, a nozzle to direct cooling liquid on the molds asthey pass in turn when the mold table rotates, and means to direct theliquid from the pan to the pump and from the pump to the nozzle.

2. In a glass forming machine, the combination of a hollow base havin aseries of spaced partitions forming a plurality of compartments, acolumn rotatably supported by the base, a mold table mounted on thecolumn. above the base, an annular series of molds mounted on the moldtable, the upper'surface of the mold table being dished toward thecolumn and provided with holes through which liquid. may drain, anannular pan mounted below the mold table and coaxial therewith toreceive the liquid that drains from the holes in the mold table andprovided with an opening for draining the liquid from the pan into oneof the compartments, said compartments being connected in series byopenings to retard the flow of liquid to the compartment last receivingthe liquid, a pump having an inlet and. an. outlet and mounted on thebase, a pipeconnecting the pump inlet to the compartment last receivingthe liquid, a nozzle for directing a spray on the molds as they pass inturn when the mold table rotates, a second pipe connecting'th'e pumpoutlet to the nozzle" to spray cooling liquid on the molds.

